<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>HTML区块</title>
</head>
<body>
<div style="background: blueviolet;height: 100px; width: 100px">
  <span>这是第一个区块</span>
</div>

<div style="background: chartreuse;height: 100px; width: 100px">
  <span>这是第二个区块</span>
</div>
</body>
</html>